What do endometriosis blood clots look like?

Endometriosis itself doesn’t create a specific, recognizable “type” of blood clot you can identify just by looking. The clots you pass during a period are usually clotted menstrual blood mixed with pieces of shed uterine lining, so they can look dark red to deep brown, jelly-like, stringy, or like thicker “chunks”—and this can happen with or without endometriosis.

What matters more than appearance is the pattern that comes with it. If you’re seeing clots along with heavy or abnormal bleeding, severe or worsening period pain, pain with sex, bowel or bladder symptoms, or pelvic pain that isn’t limited to bleeding days, that combination can fit with endometriosis (and can also overlap with other conditions like adenomyosis or fibroids). If this is what you’re experiencing, our team can help you sort out the likely drivers and discuss what a thorough evaluation and long-term treatment plan can look like—including when minimally invasive excision surgery is worth considering.